Through a process called metastasis a malignant tumor's cells will eventually break off, travel throughout the body, and begin forming tumors in other regions.

通过转移，恶性肿瘤的细胞最终会断裂，然后遍布全身，并开始在其他区域形成肿瘤。

Filtering is done by hair-like cellular appendages called cilia.

清除由像头发样的称为纤毛的细胞附属器官完成。

But brain researchers have discovered that when we consciously develop new habits, we create parallel paths, and even entirely new brain cells, that can jump our trains of thought onto new, innovative tracks.

但大脑究人员发现，当我们有意识地培养新的习惯，就创建了平行路径，甚至是全新的脑细胞，可以让我们思绪的列车跳转到新的创新轨道上来。

Your cells regenerate, your hair, your nails, everything grows for your entire life.

你的细胞、你的头发、你的指甲，每样在你的人生中都会成长。

Changes in brain cells can affect communication between different regions of the brain.

脑细胞的变化会影大脑不同区域之间的交流。

Need raw materials for maintenance in other cells?

需要维持其它细胞的原材料？

What's the difference between a gamete and a zygote?

生殖细胞和受精卵的区别是什么？

A normal balance of electrolytes is essential to the normal function of cells and organs.

正常的电解质的平衡状态对于细胞和器官的正常运转非常重要。

According to a study published in the journal Cell, the compounds successfully removed deadly strains of bacteria in mice which are resistant to all known antibiotics.

根据发表在《细胞》杂志上的究，该化合物成功地清除了小鼠体内对所有已知抗生素有抗性的致命菌株。

It involves taking a rat kidney and stripping it of its cells, leaving a shell which's then relined with renewed cells from newborn rats and blood vessel running cells from human donors.

该过程需要个老鼠肾脏，将细胞剥掉，保留空壳，然后将新生老鼠的新细胞装入，还需要人类捐赠者的血管运行细胞。

In the case of the Spanish flu, the cells of infected younger patients released a deleterious excess of cytokines, leading to excessive inflammation of the lungs, and more importantly, tissue necrosis.

以西班牙流感为例，受感染的年轻患者的细胞释放了过量的有害细胞因子，导致肺部炎症过重，更重要的是组织坏死。

But the lion's share of our heart cells are actually polyploid, meaning two or more copies from mom, two or more copies from dad.

但我们心脏细胞的大部分是多倍体，也就是说从父亲或母亲处遗传到两套或两套以上的染色体。

It takes about a day until these cells make it to your aching muscles.

这些细胞到达你的酸痛肌肉部位大约需要天的时间。

Sleep helps these cells grow and connect, so if we think of our brain as a tree, sleep is like the miracle grow, and while we sleep, all the tiny branches will grow and flourish.

睡眠会促进这些细胞的生长和连接，如果将大脑比喻成大树，睡眠就是神奇的生长剂，睡眠的时候，所有的小树枝就会生长，繁荣。

But every now and then, a point mutation disrupts an important capability in a cell or causes a cell to misbehave in harmful ways.

但有时，点突变会破坏细胞的重要功能，或导致细胞以有害的方式出现行为失常。

The only cells it really infects are what we call respiratory epithelial cells, a one-cell layer of cells that kind of protect the breathing tubes and the lungs, all the way down to the bottom, where we have air sacs.

唯真正受到感染的细胞是我们所说的呼吸上皮细胞，种保护呼吸管和肺的单细胞层，直到管道底部有气囊的地方。

Gamma-amino butyric acid, or GABA, for example, is a chemical thatshuts down nerve cells.

如γ-氨基丁酸或伽马氨基丁酸，都是可以使神经细胞关闭的化学物质。

And then if that weren't enough, it's actually toxic to the connections in your cells.

而且如果这些还不够的话，缺少睡眠还会危害细胞之间的联系。

A hundred million new cells are born every minute, and a hundred million old cells are destroyed. It's actually the breakdown products of these red blood cells that turn your bruises and urine yellow.

每分钟有上亿的新细胞诞生，同时也有上亿的细胞死亡。你身上的挫伤和尿液的黄色就是来自这些红血 球细胞的分解产物。

Our research aims to reveal the atomic structures of membrane proteins that take sugars, calcium ions, and sodium ions into our cells.

我们的究旨在揭示将糖、钙离子和钠离子带入我们细胞的膜蛋白的原子结构。